pearson



Sheets-Sheet 1.

(No Model.)

P. L. DPEARSON.

MACHINE FOR CUTTING ICE.

Patented Feb. 7,1882.

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, [7a/Ven??? (N0 Model.) 2 Sheets-Sheet 2.

E. L. D. PBRSON. A

MACHINE FOR CUTTING 1GB. No. 253,223.y Patented Peb. 7,1882.

UNITED STATES PATENT Ormes.

FELIX L, DEGARRIE PEARSON, OF MONTREAL, QUEBEC, CANADA.

MACHINE FCR CUTTING ICE.

SPECIFICATION forming part of Letters Patent-No. 253,223, dated February '7, 1882,

Application filed December 22, 1881. (No model.)

To all whom it may concern: I

Be it known that I, FELIX LOUIS DECARRIE PEARSQN, of the city and district of Montreal, Province of Quebec,` Canada, have invented certain new and useful Improvements in Machines for Cutting Ice; and I do hereby declare that the following is a i'ull, clear, and` exact description of the same.

This invention has reference to a machine for Cutting ice, so arranged that by simply turning a shaft the double operation of working the saws with which the machine is provided and the propulsion of the machine, according as the cutting of the ice takes place, is effected. 1

In the drawings hereunto annexed, similar letters of reference indicate like parts, and Figure l is a side elevation of a machine embodying my invention. Fig. 2 is a plan ofFig. l.4 Fig. 3 is a front elevation of that part ot' the machine behind the line ww', Fig. l. Fig. 4 is a front elevation of that part of the machine in front of theline fr rv, Fig. l. Fig. 5is a detail.

Letter A is a strong platform mounted upon runners B and G and wheels D. It is provided with two sides, E, extending upward, as shown. These are provided each with an ordinary bearing, F, for carrying a crankshaft, G, provided with cranks H, situated between the said bearings,while on each end ofthe shaft G, extending beyond the said bearings,

disks I are secured, each ot' which is provided i with a crank-pin, K; or, instead of the disks I and pins K, single cranks may be used, if desired.

If it is desired that the cuts of the saws N should be equally distant from each other, care must be taken to make the distance between all the crank-pins equal as measured longitudinally on the shaft.

To the platform A and sides E are secured guide-bars L. The inner ones are only shown in Fig. 3; but they are substantially similar to the outer ones, which are shown in Figs. l, 2, and 3. Each pair of guide-bars is provided with a slide-block, M, to each ot' which is secured (in any ordinary way by which it may be easily removed) a saw, N. Each slideblock is attached by a connecting-rod, 0, to its corresponding crank, H, or crank-pin K,

E. On B' two pulleys, D', are secured,whioh, l

by belts E', revolve the pulleys I) and crankshaft H, it being so arranged that the crankshaft will make quite a number of revolutions Ato one of the shaft B'.

On the axle F' of the wheels D a pinion, G', is secured, gearing with It, so that the: two pinions A' and G' are simultaneously revolved by the revolution of It. Therefore the saws are worked up and down and the wheels I) turned round to draw the machine forward and keepv the saws up to theircut by the motion of It. For the purpose of giving D greater. tractive force they may be armed upon their peripheries with spikes or teeth. (See Fig. 5.)

H' is a truck, consisting of a pair ot' runners, I', united together bya cross frame-work, K', n which is secured a king" or center pin, L'. This extends up into the socket M'a considerable distance, the socket being bored ont f and the pin turned to tit each other; but the bore of the socket is in the upper part-say for about one-quarter of its height-reduced in size and cut with a screw-thread to tit the screw N', so that by screwing down N' the front part of the platform may be lifted or jacked up, raising the wheels D from the ice.

A2 are arms attached on the side E, holding guide-bars B2 for guiding the machine by the said bars sliding along the edge of the ice.

In working the machine, whenever ithas to be removed from one place to another, as in bringing it down upon the ice or in removing it at the end of a cut to come back and commence a new cnt, the saws are taken oft', or the slideblocks may be so arranged that the saws may be slipped up clear of the ice or ground. The guide-bars B2 are also raised, and for this purpose the sockets at their ends may be provided with pinching-screws. The frontofthe platform A is lifted by the screw I raising the wheels D from the ice, so that the machine stands upon the rnnnersB and I'. As the runners C are clear IOO of the ice, the machine may be readily removed from place to place by any ordinary draft-pole or shafts, A4, attached to the truck H. When the machine has arrived at the spot where itis intended to cut the ice, corresponding holes are eut in the ice for the saws to pass down through. These are now putin place and the machine is carefully guided in a straight line in the direction required while making the first cut, to do which the screw l y is raised,allowingthe wheels D to rest upon the ice, the truck H simply sliding along in front. After the first cut has been made the saws are raised or taken off and the machinejacked in front and brought back to begin a new line of cuts. The saws and guides -B2 are now putin place, as shown clearly in the drawings, especially Fig. l, where the part of the ice sectionlined horizontallyY indicates the ice cut with the saws.

Although not shown in the drawings, the axle F and runners B and U are set with a very small amount of bevel, (not shown because the amountis too small to show on so small a scale,) about an eighth ot' an inch to the foot, to incline the machine to work away from the edge of the ice, and thus keep the guide-bars B2 at a fair bearing upon the edge ot' theice. (See Fig. 2.)

When it is desired t0 commence a cut upon the edge of an open space in the ice, as if the part of the ice shown in Fig. l section-lined by horizontal lines had been removed, in this case the machine will be brought to the position shown in Fig. l, only that the runners G will now rest upon the. ice, and those B will be in the water, the machine thus standing on the runners C and wheels D, the weight in front being so great that there will be no danger ofits falling over into the water. The machine may be now started to work in the same manner as hereinbefore described, and as the cutting proceeds the runners B will collie to and mount upon the ice, lifting the runners C clear of the ice.

Although the. machine is shown and described as having four saws, I do not confine myself to that number. 1f made with a greater or less number, any person of ordinary skill will understand from the above what changes are to be made without further description.

That I claim, and wish to secure by Letters Patent, is as follows:

1. The combination of the saws N with an operating mechanism, substantially as described, and traction-wheels D, simultaneously operated to move the vmachine forward, and runners B, substantially as described.

2. The combination of the saws N, wheels D, runners B, and operating mechanism by which the saws and wheels D are simultaneously operated, and guides B2, the whole substantially as and for the purposes set forth.

3. The combination of the saws N, Wheels D, runners C, and operating mechanism by which the saws and wheels D are simultaneously worked, substantially as described.

4. The combination of the platform A, provided'wth runners B C, wheels l), truck H', and guides B2, also jacking device for raising the wheels D, with the saws N, and au operating mechanism for simultaneously working the said saws and wheels, the Whole substantially as and for the purposes set forth.

l FELIX L. DECARRIE PEARSON.

Witnesses:

CHARLES G. C. SIMPSON, A. M. A. SIMPSON. 

